Casing for an electronic AC speed control unit



FIG. 1 is a rear perspective view of a casing for an electronic AC speed control unit showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a rear elevational view thereof.

The undisclosed bottom is unornamented except for the inclusion of the feet. 

The ornamental design for a casing for an electronic AC speed control unit, substantially as shown and described. 